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प्रश्न
Fifteen men can build a wall in 60 days. How many more men are required to build another wall of the same size in 45 days?
उत्तर
In 60 days a wall can be built by = 15 men
In 1 day a wall can be built by = 15 x 60 men
In 45 days a wall can be built by = `(15xx60)/45=900/45` = 20 men
No. of more men required to build the wall in 45 days = 20 – 15 = 5 men
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